Kone hurt in QPR development squad game

QPR striker Richard Kone was substituted less than 30 minutes into a game for the club's development squad on Monday.The 23-year-old, who was QPR's leading scorer last season, has made only four first-team appearances this term without a goal.He picked up an injury against Middlesbrough on 5 September and made a return against Bolton's Under-21s.However, he limped out of the game after being hurt in a strong challenge, in a match which Bolton's youngsters won 3-1.The nature of Kone's problem is